sci
hub

to open science
Langthjem, M A; Nakano, M . (2010). Numerical study of the hole-tone feedback cycle based on an axisymmetric formulation. Fluid Dynamics Research, 42(1), 015008–. doi:10.1088/0169-5983/42/1/015008 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research